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Norbert Gains, a bagpiper with Colorado Emerald Society Pipes and Drums who is retired from Denver Fire, gets his bagpipe in tune before the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Sung Lee, second from right, with Arvada Fire Protection District, closes his eye during the playing of \xe2\x80\x9cAmazing Grace\xe2\x80\x9d during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Stephanie Sheldon attaches a total of 14 badges, all remembering a NYFD firefighter who die from the events of Sept. 11, 2001, during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Firefighters with West Metro Fire Rescue unfurl the U.S. flag being hung between two engines during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Participants make their way up the ramp to the amphitheater during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

A participant carries a badge with the name and photo of Gerald T. Atwood, a Ladder 21 firefighter who died on Sept. 11, 2001, during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Jacqueline Adams Crockett becomes emotional as the terrorist attacks of Sept. 11, 2001, are recounted during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Chris Evans with Peyton Fire Protection District, picks up a badge in remembrance of Michael Francis Lynch, a NYFD firefighter with Engine 60, who died from the events of Sept. 11, 2001, during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Jon Garcia, with Arvada Fire Protection District, kneels during a recounting of the Sept. 11, 2001 terrorist attacks on the World Trade Center during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Giovanni Tolvo, center, with Bennett-Watkins Fire Rescue, holds this son Vincent Tolvo, 1, while standing with his father Joe Tolvo, left, as audio from newscasts are played to recount the events of Sept. 11, 2001, during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Cody Hinkle, with Front Range Fire Rescue, front-left, makes his way up the north stairs of the amphitheater during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Giovanni Tolvo, with Bennett-Watkins Fire Rescue, carrie this son Vincent Tolvo, 1, during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Justin Hinz, with Elizabeth Fire Protection District, briefly rests before continuing on during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Jon Garcia, with Arvada Fire Protection District, kneels during a recounting of the Sept. 11, 2001 terrorist attacks on the World Trade Center during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Participants ascend the north side of 4th amphitheater during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Alexandra Leschinsky with Galeton Fire begins the climb during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Joe Weston, left, and Capt. Collin Stookey, both with West Metro Station 16, rest at the top of the amphitheater during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

John Rowe-Stokes with Front Range Fire Rescue ascends the north stairs while loaded down with equipment during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Erin Stack carries her sleeping granddaughter, seven-month-old Elouise Stack, while descending the stairs with her son, Jaydin Stack with Boulder Fire-Rescue, left, during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)

Cody Hinkle, with Front Range Fire Rescue, pauses near the top of the amphitheater during the annual Red Rocks 9/11 Remembrance Stair Climb on Friday, Sept. 11, 2026, at Red Rocks Amphitheatre in Morrison, Colo. Participants complete nine laps of the amphitheater, the equivalent of climbing the 110 stories of the World Trade Center buildings. The climb is one of over 50 such climbs in the U.S. (Photo by Timothy Hurst/The Denver Post)